Power-hammer-ram coupling.



L. MAYER.

POWER HAMMER RAM COUPLING.

APPLICATION FILED )UNE 8.1916.

:1 ,225;@%& a Patented May 8', 1917.

( /aizs 1&2

UNITED Pa o,

LOUIS MAYER, or an rreo, WISCONSIN.

POWEB HAMMER-BAM COUPLING.

Application filed June 8, 1916. Serial No.

To all whom it may concern Be it known that T, Louis MAYER, a citizen ofthe United States, and resident of Antigo, in the county of Langlade andState of Wisconsin, have invented certain new and useful Improvements inPower-Hammer- Ram Couplings; and 1 do hereby declare that the followingis a full, clear, and exact description. thereof.

The present invention relates to power hammers and is directed to theprovision of an improved coupling for the ram or hammer head, moreparticularly of that gen eral type now in common. use, and includingspring urged yoke arms depending from the wrist pin of the crank wheeland connected with a hollow portion of the rain by T-head linksengageable in said hollow portion, whereby a loose coupling is procuredto prevent the transmission of jars and shocks from the ram or hammerhead to various working parts of the machine.

This type of structure is open to some objection in that considerableexpense is involved in the formation of the hollow ram head portion andthe T-head links engageable therewith, and this structure is also opento the further objection that should breakage of one of the links occur,considerable ditliculty would be encountered in mal; ing the particularT-head formation of a link to be substituted therefor.

It is therefore the object of the present invention to provide anarrangement for loosely coupling the ram or hammer head to the yoke armswhich may be more economically manufactured and it is further an objectto provide a coupling including links of such nature as to permit theirready formation by persons not necessarily supplied with specialapparatus or tools.

It is further an object to retain in the present structure, a readilydetachable relation of the links and hammer head.

l Vith the above and other objects and advantages in view the inventionresides more particularly in the novel combination, arrangement andformation of parts more particularly hereinafter described and pointedout in the appended claims.

Tn the drawings:

Figure 1 is a front elevation of the ram and crank wheel structure of ahammer embodying the present invention.

Fig. 2 is a vertical sectional view through an intermediate portion ofthe structure of Specification of Letters Eatent.

Patented'llllay 55, 191.7.

1, with other portions of the structure in elevation, this view beingindicated more particularly by the line 22 of Fig. 1.

Fig. 3 is a transverse sectional view through the coupling on the line3-3 of Fig. 1.

Referring now more particularly to the accompanying drawings, 5designates the conventional body structure of a power hammer machine,having at its upper portion the shaft 6 carrying at its forward end acran; wheel 7 on which is eccentrically mounted a pin 8 carrying apitman link 9 on which is secured a sleeve 10 from which pivotallydepends a pair of yoke arms 11 resiliently urged. apart by a relativelystrong coil spring 12 disposed between their intermediate portions. 13designates the anvil of the hammer, and reciprocative above this anvilis the hammer head or ram 14 mounted in a vertical dove tail channel 15carried by the body 5. The lower ends of the yoke arms 11 are bifurcatedfor pivotal securement of the outer ends of links 16 connectsaid armswith the ram, and all of the structure heretofore described is of aconventional nature. One of the links 16 is adjustably mounted in asleeve 17 connected with a respective yoke arm whereby an adjustment ofthe spring tension may be procured.

To form the improved loose coupling between the links 16 and the ram,comprising the present invention, the upper portion of the ram isintermediately cut away to form a recess bounded by the front and rearwall portions 18 and 19 respectively and these wall portions areconnected by horizontally spaced integral bar portions 20, the sides ofthe recesses being thus open to receive the inner ends of the links 16,which are curved in hook shape to engage about the bar portions, and tohold the hooked ends of the links against possible displacement when thelinks are connected with their respective yoke arms, the bottom portionof the recess, is of substantially inverted V; shape to extend betweenthe inner ends of the links, suitable space, however, being providedbetween the bar portions and the bottom of the recess whereby a desiredlooseness of the coupling may be procured.

Thus when connected with the yoke arms,

the links can not be detached from the ram, 1.

even should a breakage of the spring 12 ocour, and the links may be onlydetached by swinging them radially upwardly about the bar portions.

The recess and bar portions 20 of the present structure do not interferewith an integral casting of the entire ram structure, and thus aconsiderable economy of manufacture is procured.

Also the hooked form of the link ends'may be more readily made thanlinks including T-shaped heads, and this is most particularly true inproviding links as repair parts under such conditions as access tospecial apparatus for forming the link ends would not be had.

I claim:

1. In a ram coupling for power hammers, the combination with areciprocating ram and pivotally suspended yoke arms of bar portionscarried by the ram, and links pivoted to said yoke arms and having theirinner ends bent in hook shape to embrace the bar portions of the ram,and other por tions of the ram being disposed adjacent said bar portionsto hold said links thereagainst whereby said links may be interlockinglyengaged and disengaged with the ram only by rotary movement about thebar portions.

2. In a ram coupling for power hammers, the combination with areciprocating, ram and a pair of pivotally suspended yoke arms of linkspivoted to said yoke arms, the up per end of the ram being cut away toform a recess open at its sides, bar portions extending transversely ofthe recess and the inner ends of the links being bent in hook shape toengage about said bar portions, and being held against said bar portionsby the body of the ram.

3. In a ram coupling for power hammers, the combination with areciprocating ram and a pair of pivotally suspended yoke arms of linkspivoted to said yoke arms, the upper end of the ram being cut away toform a recess open at its sides, bar portions extending transversely ofthe recess, the inner ends of the links being bent in hook shape toengage about said bar portions, and a projection on the bottom of therecess extending between the inner ends of the links whereby they may beinterlockingly engaged and disengaged with the bars only by rotarymovement about the bars.

In testimony that I claim the foregoing I have hereunto set my hand atAntigo, in the county of Langlade and State of Wisconsin, in thepresence of two witnesses.

LOUIS MAYER.

Witnesses:

FRED I V. KIEFER, LAURA FEIL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

